Wistar glass Simplified: a Pictorial comparison. 1-A Wistar jar exhibiting "Gall" in the batch, shown in direct light-Matching fragment of identical color dug at Wistarburgh exhibiting "Gall" in the batch, shown in direct light.
1-A Wistar jar exhibiting "Gall" in the batch, shown in direct light-Matching fragment of identical color dug at Wistarburgh exhibiting "Gall" in the batch, shown in direct light.
